GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Eulalia monostachya

HABIT Perennial; caespitose. Butt sheaths pubescent, or pilose. Culms 70–90 cm long. Ligule a fringe of hairs. Leaf-blades involute; 6–15 cm long; 2–4 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes. Peduncle pubescent above.

Racemes 1; single; flexuous; 10–12 cm long. Rhachis fragile at the nodes; flattened; villous on surface. Rhachis hairs dark brown. Rhachis internodes linear; 3–3.5 mm long. Rhachis internode tip oblique.

Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; 2.25–2.5 mm long; villous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus oblong; 1 mm long; pubescent; base obtuse; attached obliquely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; much thinner above; dark brown; 2-keeled; keeled above. Lower glume surface villous; hairy below. Lower glume hairs dark brown. Lower glume apex truncate. Upper glume elliptic; 1 length of spikelet; coriaceous; much thinner above; dark brown; 1-keeled. Upper glume surface pubescent; hairy below. Upper glume margins ciliate. Upper glume apex truncate; muticous.

FLORETS Basal sterile florets with vestigial lower floret. Fertile lemma orbicular; 1 mm long; membranous; without keel. Lemma apex lobed; 2 -fid; incised 0.33–0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 15–20 mm long overall; with twisted column; limb pubescent (limb). Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 3; 3–4 mm long.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Andropogoneae. Lecomte.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.